Gilles Gouaillardet <gil...@rist.or.jp> writes: > Bennet, > > > my guess is mapping/binding to sockets was deemed the best compromise > from an > > "out of the box" performance point of view. > > > iirc, we did fix some bugs that occured when running under asymmetric > cpusets/cgroups. > > if you still have some issues with the latest Open MPI version (2.0.1) > and the default policy, > > could you please describe them ?
I also don't understand why binding to sockets is the right thing to do. Binding to cores seems the right default to me, and I set that locally, with instructions about running OpenMP. (Isn't that what other implementations do, which makes them look better?) I think at least numa should be used, rather than socket. Knights Landing, for instance, is single-socket, so no gets no actual binding by default. _______________________________________________ users mailing list users@lists.open-mpi.org https://rfd.newmexicoconsortium.org/mailman/listinfo/users
